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diff --git a/src/thread_management.c b/src/thread_management.c
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+/*
+ * active port forwarder - software for secure forwarding
+ * Copyright (C) 2003,2004,2005 jeremian <jeremian [at] poczta.fm>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ */
+
+#include <config.h>
+
+#include "thread_management.h"
+
+#ifdef HAVE_LIBPTHREAD
+
+static pthread_t mainthread;
+static pthread_mutex_t mainmutex = PTHREAD_MUTEX_INITIALIZER;
+static pthread_cond_t maincond = PTHREAD_COND_INITIALIZER;
+
+void
+remember_mainthread(void)
+{
+ mainthread = pthread_self();
+}
+
+int
+is_this_a_mainthread(void)
+{
+ if (pthread_self() == mainthread) {
+ return 1;
+ }
+ return 0;
+}
+
+void
+start_critical_section(void)
+{
+ pthread_mutex_lock( &mainmutex);
+}
+
+void
+end_critical_section(void)
+{
+ pthread_mutex_unlock( &mainmutex);
+}
+
+void
+wait_for_condition(void)
+{
+ pthread_cond_wait(&maincond, &mainmutex);
+}
+
+void
+broadcast_condition(void)
+{
+ pthread_cond_broadcast(&maincond);
+}
+
+#endif